Home / 127,257.90-190,886.85-103,638.30

Finding the Fourth Proportional to 127,257.90, 190,886.85 and 103,638.30

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Solution

The fourth proportional to 127,257.90, 190,886.85 and 103,638.30 is: 155,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,257.90 : 190,886.85 = 103,638.30 : x
  2. Step 2: Convert to fraction form
    127,257.90/190,886.85 = 103,638.30/x
  3. Step 3: Cross multiply
    127,257.90x = 190,886.85 × 103,638.30
  4. Step 4: Simplify right side
    127,257.90x = 19,783,188,626.36
  5. Step 5: Solve for x
    x = 19,783,188,626.36/127,257.90
  6. Step 6: Final answer
    x = 155,457.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.